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  • Title: Regional effects of neuroleptics on dopamine metabolism and dopamine-sensitive adenylate cyclase activity.
    Author: Scatton B, Bischoff S, Dedek J, Korf J.
    Journal: Eur J Pharmacol; 1977 Aug 15; 44(4):287-92. PubMed ID: 19266.
    Abstract:
    The effect of haloperidol, chlorpromazine, thioridazine and sulpride on the levels of DOPAC and HVA, as an index of DA turnover, and on the activity of DA-stimulated adenylate cyclase was investigated inthe striatum, the nucleus accumbens and the tuberculum olfactorium of the rat brain. Haloperidol, chlorpromazine and thioridazine caused a more marked increase in DA turnover in the striatum than in the mesolimbic areas, while the reverse was true for sulpiride. In contrast, although the relative potency of these compounds varied greatly, the Ki of each drug for the DA-sensitive adenylate cyclase was similar in three structures of rat brain. The results indicate that in the three brain structures investigated there was no correlation between the differential effects of neuroleptics on dopamine turnover in vivo and the blockade by these drug of the DA-sensitive adenylate cyclase activity in vitro.
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